baber/WOPTO huggingface dataset:
Patent GB-1027601-A (GB)
Title: Method and apparatus for producing steel from pig iron
IPC: C21C5/34
Filed: 1963-04-11
Abstract: Pig-iron is refined in a vessel having a porous bottom through which is blown a major part of the oxygen required, the remainder of the oxygen together with lime suspended therein being blown downwardly into the iron from above the surface. The oxygen blown in from below may be diluted with argon or other inert gas the proportion of the latter being varied to control the agitation of the bath, or the oxygen may contain carbon dioxide or steam. Nitrogen may also be present if it is desired to increase the concentration thereof in the bath.  Additional oxygen may be supplied to the space above the bath to burn the gases evolved; it preferably contains fine suspended particles to enhance heat transfer between the molten iron and the flame.  The process may be carried out batchwise, in a converter of conventional shape, or may be carried out continuously, for which purpose a suitable apparatus is described.  (see Division F4).
Patent GB-936789-A (GB)
Title: Blade pitch control mechanism for a helicopter
IPC: B64C27/54
Filed: 1962-04-16
Abstract: 936,789. Rotary wing aircraft. KAMAN AIRCRAFT CORPORATION. April 16, 1962 [May 10, 1961], No. 14678/62. Class 4. Helicopter blade pitch control mechanism comprises three parallel generally horizontal arms 114, 116, 118 pivotable together about a fixed horizontal axis, one arm 118 being connected to a pilot's collective pitch lever 41, through linkage 42, 44, 46, 48, 50, 52, 54, 56, 58, 90, and 96, and being connected through a vertical link 104 to a swash plate assembly 26, 28, to move the assembly bodily vertically, the other arms 114, 116, each supporting a bell crank lever 128, 130, pivotally about an axis spaced from and parallel to the fixed axis of the arms, each bell crank lever 114, 116, being connected to the swashplate assembly to tilt it by a vertical link 106, 108, and being connected to a pilot's cyclic pitch stick 60. Movement of collective pitch lever 41 moves all three links 104, 106, 108 equally. Movement of stick 60 fore-and-aft, and laterally, tilts the swash plate assembly similarly by acting on rod 106, and 108, respectively. Links 96, 98 and 100 extend at 45 degrees to the fore-and-aft axis of the aircraft, the rotor shaft 15 being centrally placed. Rod 106 is thus at the rearmost part of the assembly, and rod 108 at its right hand extremity. Four rods 30 extend from the swash plate assembly through the hollow drive shaft 15, each rod controlling a pitch changing servo-tab 25 on one blade through linkage 31, 33, 34, 36, 37, 38, 39, and 40. The blades are displaced angularly from their respective rods, so that when cyclic pitch is applied, the tilting of the tip path plane corresponds in azimuth to that of the swash plate assembly in conventional fashion. Pitch change bearings are provided between the blade root 23 and an arm 17 mounted on the hub on a flapping axis 19 and drag axis 20.
Patent GB-833428-A (GB)
Title: Improvements in or relating to apparatus arrangements for the storage of digital information
Inventor: KILBURN TOM
IPC: G11C11/06
Filed: 1955-05-21
Abstract: 833,428. Circuits employing bi-stable magnetic elements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 22, 1956 [May 21, 1955], No. 14715/55. Class 40 (9). [Also in Group XIX] A binary digit is stored in a magnetic core f of a matrix by applying separate groups of pulses to conductors RF1, RF2 linked respectively with the rows and columns of cores in which the core f is situated. The pulses of the groups, Fig. 1 (e), (f) applied to the rows and column are interlaced. The mark to space ratio of the pulse is chosen so that a large number of pulses, say 500, of one group is necessary to change the state of the core and only a small number, say 100 pulses, of the combined groups, Fig. 1 (g), is sufficient. False operation by single groups of 100 pulses is thereby avoided. The mark to space ratio may be 1 to 1 so that the two groups are equivalent to one long pulse. Three or more groups of pulses may be interlaced and used to set a core.
Patent GB-549277-A (GB)
Title: Improvements in or relating to the production of glass coatings on objects of materials having high melting points
IPC: H01J5/26
Filed: 1941-11-17
Abstract: 549,277. Coating articles with glass. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 17, 1941, No. 14788. Drawings to Specification. [Class 56] [Also in Group XXXVI] The subject-matter of this Specification is substantially the same as that described in Specification 602,215.
Patent GB-109515-A (GB)
Title: Improvements in and relating to Train Stopping Apparatus.
Inventor: DUGGAN JEREMIAH LEO
IPC: B61L3/04
Filed: 1916-10-18
Abstract: 109,515. Duggan, J. L., and Maynard, J. D. Oct. 18, 1916. Track apparatus /or stopping trains.-In apparatus of the kind wherein a projecting arm carried by a rotary valve mounted on the engine is adapted, when actuated by means mounted on the track, to operate the valve so that the brakes are applied and the steam cut off simultaneously, the vertically arranged rotary valve 3 has a plug 5 provided with a lever 17 adapted to be actuated from its normal position by contact with a miniature semaphore 2 operated simultaneously with an adjacent standard semaphore. When the plug is turned from its normal position, communication between the brake pipe 18 and the atmosphere is established through the ports 6, 7 and bore 8. The supply pipe 20 to a motor for operating the brake valve, steam-inlet valve, sand-supply &c. is simultaneously placed in communication with the conduit 19 from the main air reservoir through the ports 9, 10 and groove 11, and communication between the branch pipe 22 and the atmosphere is broken by the cavity 14 moving out of register with the ports 12, 13.
Patent GB-686794-A (GB)
Title: Improvements in or relating to a process for recovering silica
IPC: C01B33/18
Filed: 1950-06-14
Abstract: <PICT:0686794/III/1> Amorphous light-coloured silica in spherical particles substantially entirely less than 44 microns diameter is produced by reacting siliceous material and carbon at at least 1200 DEG C, e.g. 1200-1750 DEG C, in an electrically heated reaction zone to form gaseous products which are mixed in a confined space with volumes of air sufficiently large to rapidly oxidize and to cool the oxidized products, e.g. 1800-4000 cu. ft. per lb. of silica, simultaneously rapidly removing the products from the reaction zone and flowing them in an enclosed path to a filtering zone, and filtering to recover silica.  A charge of iron, silica, and carbon, e.g. coal, coke, or graphite is fused in the hearth 1 of an electric arc furnace having carbon electrodes 4 and hood 5 Air flows in at 6, 7 and oxidizes the fume of SiO and CO to SiO2 and CO2, the heat from oxidizing CO to CO2 serving to maintain the SiO in vapour state until completely oxidized.  The gaseous products flow through conduit 9, which may have secondary cooling air inlets 10 or a water-cooled heat-exchanger, to surge chamber 11.  The silica-containing gases at 49 DEG C pass to filtering chamber 15 where the silica is collected in filter bags 14, e.g. wool, cotton, nylon, or sateen, and is periodically shaken into hopper 18 for removal.  The waste gases pass out at 21 to pump F which maintains the rapid flow of gases in the system.  At least two filter chambers should be used so that one is collecting while the bags in the other are being shaken. Ferrosilicon formed is withdrawn as necessary through taphole 3.
Patent GB-863997-A (GB)
Title: Improvements in yarn breakage stop-motions in textile machinery
Inventor: BASSINDALE ISAAC BRADLEY
IPC: D03D51/00
Filed: 1958-05-09
Abstract: 863,997. Warp stop motions. T.M.M. (RESEARCH) Ltd. June 4, 1959 [May 9, 1958], No. 14941/58. Drawings to Specification. Classes 142(1) and 142(2) The subject-matter is the warp stop motion described in Specification 811,348. Reference has been directed by the Comptroller to Specification 811,348.
Patent GB-268189-A (GB)
Title: Improvements in and connected with coal cutting and like machines
IPC: E21C35/04
Filed: 1926-06-14
Abstract: 268,189. Hurd, F. W. June 14, 1926. Coal-cutting machines.-Feed mechanism for a coal-cutting or like machine comprises a feed rotor or shaft operated from a driving shaft through ratchet &c. gearing by crank and link mechanism, the link having a direct pivotal connection with a connecting rod pivoted to the crank, said pivotal connection being constrained by an angularly adjustable guide. A crank 21 carries a connecting rod 10 pivoted to a link 8 connected to a split, spring-pressed strap 6 frictionally engaging a ratchet wheel surrounding a pawl carrier fixed to the feed shaft 1; the pivot 12 of the link 8 and connecting rod 10, or a cross-head carried by the connecting rod adjacent the pivot, moves along a straight or arcuate guide 14 which, by means of toothed quadrants 17, 18, or gears, is angularly adjusted to vary the travel of the link and the throw of the ratchet. In case cf overload, the strap 6 slips on the ratchet wheel. Two sets of opposed ratchet gears may be provided and controlled by an intermediate clutch to permit reversal of the drive. Three or more cranks and associated ratchet mechanisms may be provided and arranged to operate in different phases to give a continuous feed.
Patent GB-1071147-A (GB)
Title: Apparatus for the continuous filtration of molten plastics material
Inventor: CHAZAL RENE LOUIS FERNAND
IPC: B29C48/03
Filed: 1965-04-08
Abstract: Apparatus for the continuous filtration of molten plastics materials comprises a filter having a fine pore size (preferably hollow and of sintered metal), an agitator having a part thereof closely adjacent to that surface of the filter to which unfiltered material is to be supplied, an inlet for unfiltered material, an end wall remote from the inlet constraining plastics material to pass through the pores of the filter, and an orifice in the end wall for discharging impurities retained by the filter. Preferably the agitator is in the form of a shaft having one or more helically-disposed elements on its cylindrical surface, and is arranged, within the filter, to advance material to be filtered from one end to the other.  The helical element may be a thread or a helical array of radially-arranged pegs. Alternatively the agitatior may have a square cross section with rounded corners, and no helical elements.
Patent GB-585883-A (GB)
Title: Improvements in or relating to dynamo-electric torque amplifiers
IPC: G05D3/14
Filed: 1944-08-08
Abstract: 585,883. Oscillating motors. ROBINSON, E. H. Aug. 8, 1944, No. 15019. [Class 35] In a D.C. motor angular displacement of the brushes from their neutral position causes corresponding rotation of the armature, enabling the motor to function as a torque amplifier, the armature in turn being arranged to restore the brushes to their' original position. In the form shown, a supply 5 feeds the field windings 4 and the brushes 6 which are connected in series with a ballast resistance 8. A pinion 15 meshes with a rotatable brush-carrier 7 and when the control shaft 9 is rotated, motion is imparted to the brushes from the cage 12 of the differential gear. The consequent rotation of the motor shaft 16 drives the differential gear so as to restore the brushes to their neutral position. Fig. 2 (not shown) illustrates how a pair of brushes, which may be connected together directly or through a resistance may be mounted on the carrier in quadrature with the main brushes to produce damping effect and prevent hunting.
Patent GB-579804-A (GB)
Title: Improvements in or relating to photo-electrically active electrodes
IPC: H01J29/38
Filed: 1940-10-10
Abstract: 579,804. Electron discharge apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd., and LUBSZYNSKI, H. G. Oct. 10, 1940, No. 15088. [Class 39 (i)] An electric circuit includes an electron discharge device having a cathode comprising a conducting base with an electron-emissive coating, the base having contiguous raised and unraised portions and the raised portion declining gradually in the neighbourhood of the junction between the two portions down to the unraised portion, the device being operated with such field intensity at the cathode that in the absence of such gradual decline excessive concentration of the field would occur at the junction and produce unwanted emission of electrons. As shown, a mica sheet 1 carries a conductive base 2 for a photo-cathode, which base may comprise a transparent layer of silver evaporated or otherwise coated on the mica. In order to attach a lead 3, the periphery 4 of the base is thickened, the edge of the thickened portion being formed as a bevel 7 extending down to the unraised portion 2, thereby avoiding sharp edges at the junction, which would result in concentration of the lines of force and unwanted electron emission, producing a bright ring on the fluorescent screen 6. The thickening of the edge 4 may be effected by masking the portion 2 and evaporating silver past the edge of the mask, and the bevelled edge 7 may be produced by spacing the mask from the base so that the evaporated silver creeps below the edge.
Patent GB-181009-A (GB)
Title: Manufacture of new carbonyl derivatives of ª‡-naphthol
IPC: C07C65/11
Filed: 1922-05-30
Abstract: By conducting the reaction between a -naphthol and carbon tetrahalides, described in the parent Specification, in the presence of an aliphatic alcohol, there are obtained, in addition to the dyestuff, esters of 1-oxynaphthalene-4-carboxylic acid or of 1-oxynaphthalene-2 : 4-dicarboxylic acid, or 4 : 41-dioxy-1 : 11-dinaphthylketone.  These bodies are separated from the reaction mass by means of organic solvents or acids or bases.  With methyl alcohol, the esters of the two carboxylic acids are obtained; with ethyl alcohol, the ester of 1-oxynaphthalene-4-carboxylic acid and the dioxydinaphthylketone; with amyl alcohol, the dioxydinaphthylketone is the chief product. The esters may be saponified to the corresponding carboxylic acids.
Patent GB-496398-A (GB)
Title: Improvements in or relating to electronic attenuators
IPC: H01J43/30
Filed: 1937-06-01
Abstract: 496,398. Electron multipliers and circuits therefor. BAIRD TELEVISION, Ltd., JONES, V. A., and NUTTALL, T. C. June 1, 1937, No. 15210. [Classes 39 (i) and 40 (v)] An attenuator comprises an electron multiplier in which the electron stream is modulated by the input signal to produce a smaller output signal, and the electron stream is arranged to be varied in intensity so that the output signal may be varied. A multiplier comprises a photoelectric cathode 3 and secondary-electron-emitting electrodes 4 ... 8 within an earthed screen 2. Light is projected onto the cathode through an adjustable shutter 10 so that the photo-electric emission may be varied. Potentials for the electrodes are obtained from the potentiometer 13, and the input signal is applied to the terminals 14, one of which is connected through the condenser 15 to the electrode 7. The electron stream is focused by a coil, 16 so as to enter an earthed screen 17, which houses secondary electron emitting grid electrodes 18, collecting grids 20, 21 and a plane secondary electron emitting electrode 19. The potentials on the electrodes and the material of the electrode 19 are so chosen that the electron current leaving the electrode 19 is equal to the electron current flowing to the electrode 20 to obtain a balanced push-pull output at the terminals 24. Alternatively, the electrodes 20, 21 may be bonded so that the output is obtained from earthed terminal 25 and either of terminals 24. The attenuator may be calibrated in terms of the direct current through meters 26, 27. A thermionic cathode may be used, the electron emission from which is varied, or in other forms the focusing field may be varied or deflection may be used or the electrode potentials varied to vary the number of electrons entering the screen 17.
Patent GB-1066341-A (GB)
Title: Oil filters
IPC: B01D35/14
Filed: 1964-04-13
Abstract: 1,066,341. Filters. FRAM CORPORATION. April 13, 1964 [April 19, 1963], No. 15211/64. Heading B1D. A disposable oil filter comprises a cupshaped shell 10 housing a filter element (Fig. 1, not shown) and closed by a member 12 of thin metal, which has a threaded central ring 16 and is formed with a vertical annular wall 15 and oil holes 17 cut to form tabs 18, between which wall and tabs is retained an annular sealing gasket 34 and a ring 35, which bridges tabs 18 to form an inner support for gasket 34. The filter screws on threaded post 32 which forms oil outlet passage 33, with gasket 34 sealing against engine block 30, to seal inlet passage 31, 17. The filter comprises a pleated paper element, a pressure-relief by-pass valve and an anti-drain valve.
Patent GB-1034277-A (GB)
Title: Improvements in roof ventilators
IPC: E04D13/17
Filed: 1964-04-14
Abstract: 1,034,277. Ventilator for sheet roofing. M. GRAHAM-PARRY. April 12, 1965 [April 14, 1964], No. 15349/64. Heading E1V. A ventilator intended to vent gas or water vapour trapped beneath asphalt or bitumen felt roofing comprises, as an integral moulding or casting in plastics or non ferrous metal, a base plate 2 having depending feet 3, a hollow column 1 communicating with the underside of the base, a cowl 7 over vent apertures 5, and a peripheral flange 8 intermediate the base plate 2 and the apertures 5, the upper surface of the flange 8 being downwardly and outwardly inclined. The height of the flange from the base corresponds to the thickness of the roofing material.
Patent GB-1216112-A (GB)
Title: Improvements in or relating to photosensitive compositions
Inventor: LEVINOS STEVEN
IPC: C08F2/50
Filed: 1968-03-29
Abstract: 1,216,112. Photopolymerization. GAF CORP. 29 March, 1968 [3 April, 1967; 9 Aug., 1967], No. 15357/68. Heading C3P. A photopolymerizable composition comprises a monomer containing the grouping CH 2  = C < attached directly to an electronegative group, and a catalyst comprising (a) a diazonium compound which functions as an electron-acceptor and (b) a photosensitive co-catalyst comprising a diazonium compound or a photoreducible substituted anthraquinone, which function as electron-donors. The composition may be used in the production of cathode ray tube viewing panels. The exemplified compositions comprise polyvinyl pyrrolidone, ethyl alcohol, hydrochloric acid, citric acid, water, zinc chloride, N,N<SP>1</SP>-methylene bisacrylamide, acrylic acid, 2,6-anthraquinone disulphonic acid, Na salt, p-toluene diazonium chlorosineate, 2-anthraquinone sulphonic acid, Na salt, 1,5-anthraquinone disulphonic acid, Na salt, 1,8-anthraquinone disulphonic acid, Na salt, 2,7-anthraquinone disulphonic acid, Na salt, benzene diazonium fluoroborate, 2,4,6- trimethylbenzene diazonium hydrogen sulphate, 4,4<SP>1</SP>-biphenyl-bis-(diazonium fluoborate), diazotized p-aminodimethylaniline, diazotized 4 - diethylamine - 1 - amino - naphthalene, p-[2-(hydroxylethyl) amino] benzene diazonium chlorosineate, diazotized N-(4-aminophenyl) morpholine, p-toluene diazonium fluosilicate, diazotized 1 - amino - 2 - di-ethylamino - benzene, p-morpholino benzene-diazonium fluoborate, o-chloro-benzene-diazonium chlorosineate, 2,5-diethoxy or 2,5-dibutoxy- 4-morpholinobenzene diazonium chlorosineate.
Patent GB-574538-A (GB)
Title: Improvements relating to vents for electric accumulators
IPC: H01M2/12
Filed: 1944-08-11
Abstract: 574,538. Stoppers. CHLORIDE ELECTRICAL STORAGE CO., Ltd. (Woodbridge, J. L.). Aug. 11, 1944, No. 15371. [Class 125 (iii)] [Also in Group XXXVI] A battery stopper which prevents the egress of electrolyte when the battery is inverted comprises a chamber 18 which can be screwed into the filling opening of the battery and is in communication with the battery through a tube 23 which terminates in ducts 24 leading to a point near the top of the chamber. Ducts 31 lead from a point near the middle of the chamber to the atmosphere either directly or through a chamber 27 and vent 30. Capillary tubes 33 lead from the bottom of the chamber 18 to the interior of the battery. When the battery is inverted electrolyte flows through the tube 23 into the chamber 18 in which it rises and closes the ducts 24 thus preventing further flow of electrolyte. A small amount of electrolyte may flow into the tubes 33 but their diameter is sufficiently small to prevent the passage of air into the battery. When the battery is inverted to its normal position the liquid in the chamber 18 drains back into the battery through the tubes 33. In order to prevent drops of electrolyte from clinging to the walls of the tubes and ducts 23, 24, 31 and so impeding the egress of gas from the battery, these tubes and ducts may be made of polystyrene or other material which is not wetted by the electrolyte. The tubes 33 should however be wetted to provide the necessary surface tension to prevent the flow of air through them when the battery is inverted. The tubes 33 may be filled with glass wool to provide a number of capillary passages, or with porous porcelain or a mass of sintered glass particles. If the base 16 of the device is of a non-wettable material the tubes 33 may be lined with a wettable material such as capillary glass tubing.
Patent GB-981529-A (GB)
Title: Improvements relating to refractories and refractory bricks containing calcined magnesia
IPC: C04B35/01
Filed: 1961-10-31
Abstract: A process of strengthening magnesia at high temperatures, comprises mixing together from 20 to 80% by weight each of two different magnesias to form a mixture containing 90% or more by weight of MgO and from 0.8 to 3% by weight of SiO2, one of said magnesias having lime and silica in a ratio by weight of one or less and having a mineralogical component of calcium magnesium silicate and the other of said magnesias having more than 2% by weight of ferric oxide, having lime and silica as impurities in a ratio by weight of more than 2, and having 2% or more by weight of dicalcium ferrite present as component, and heating the mixture of said magnesias to a temperature in the range between 1000 DEG  and 1700 DEG  C.  Calcined alumina or chromic oxide may also be added in an amount of 1-10% by weight of the total mix.
Patent GB-1163234-A (GB)
Title: Improvements in and relating to Cinematographic Cameras and Projectors
IPC: G03B1/22
Filed: 1967-04-05
Abstract: 1,163,234. Cine apparatus. AGFA-GEVAERT A.G. April 5, 1967 [April 6, 1966], No. 15559/67. Heading G2E. In an intermittent claw feed mechanism, a rectilinear motion of claw 12a is provided by the use of a sliding pivot point A for the claw arm 12. Arm 12 is mounted on a blade spring 11 rotatably anchored to post 14 on a base plate 4 and urging pivot block 13 on the arm towards fixed surface 10a. The film drive stroke and the disengagement of claw 12a are provided by a driven eccentric 17 which has a spiral groove 17a in its face which is engaged by follower 15 on the arm. Plate 4 is vertically adjustable on pin and slot mounting, 2, 4a and 3, 4b by manually rotatable eccentric 7 for alignment of framing aperture 1b. In a modification pivot A is replaced by a pivotal attachment to an arm pivotally dependant from plate 4.
Patent GB-164356-A (GB)
Title: Improvements in control systems for electric motors
IPC: B60L15/20
Filed: 1921-06-06
Abstract: 164,356. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Hall, A. J., Clarke, J. A., and Mardis, P. L.). June 9,1920, [Convention date]. Regulation, automatic systems and apparatus for.-Relates, inter alia., to the regenerative braking of a group of directcurrent motors provided with a motor-generator for exciting the fields during regeneration. A differential relay Ry<1> oppositely responsive to a supply-voltage coil 166 and a regenerated-voltage coil 167 works between contacts 171, 172 so as to start a rheostat-operating pilot-motor respectively in opposite directions, whereby resistance is added to or subtracted from a field winding 24 of the generator 21. This action automatically keeps the regenerated voltage approximately in balance with the supply, during the stages of cutting out resistance and changing the grouping.